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Check Accessibility Dialog Box

Visual Studio 2008

The Check Accessibility dialog box lets you configure the settings for performing accessibility validation. For more information, see Accessibility Support in ASP.NET.


Accessibility tools are not available in Microsoft Visual Web Developer Express.

The accessibility validation tool checks only HTML markup. It does not check ASP.NET Web server controls, because markup is created dynamically by controls. In addition, ASP.NET controls do not have metadata for ASP.NET to create an accessibility schema. It is recommended that you test the output of your pages in addition to using design-time accessibility validation tools.

To set the accessibility settings and validate a Web page

  1. In Visual Studio, in Solution Explorer, select the name of the Web site.

  2. In the Website menu, the Project menu, or the Tools menu, click Check Accessibility.

    The Accessibility Validation dialog box is displayed.

  3. Select the accessibility settings, and then click Validate.

    The validation results are shown in the Error List window. If the Error List window is not displayed, in the View menu, click Error List.

You can also run the accessibility validation tool every time that you build a page or Web site. For more information, see Build, Web Site Property Pages Dialog Box.

Check For

WCAG priority 1

Checks accessibility by using the Web Content Accessibility Guidelines 1.0 (WCAG) that were developed by the World Wide Web Consortium (W3C). For more information about the accessibility guidelines recommended in WCAG Guidelines 1.0 and 2.0, see the W3C Web Site.

WCAG priority 2

Checks accessibility by using the Web Content Accessibility Guidelines 2.0. For more information, see Web Content Accessibility Guidelines 2.0 on the W3C Web site.

Access board section 508

Checks accessibility by using the standards that were defined by the United States government in Section 508 of the Rehabilitation Act, which are based on the WCAG. For more information, see the Section 508 Web site.



In the results list, includes items that are considered errors according to the guidelines that you have selected.


In the results list, includes items that might have to be adjusted.

Manual checklist

Creates a checklist you can use while you address any issues that are identified in the accessibility checker report.